simms



(No Model.)

2 Sheets Sheet '1.

R. SI MMS PNEUMATIC TIRE.

. Patented-Manly 31;18 98L 2 Sheets-Shet 2.

(No Mbdel) 'SIMM SL PNEUMATIC TIRE.

Patented Maiy- 31'. 1898.

willie- 556s rubber orother rings are designed to be riv- 1 UNITEDSTATES-V PATENT QFFICE.

FREDERICK. RICHARD SIMMS, or Lo'nDoN, ENGLAND.

PNEUMATIC TIRE.

- 5 SPECIFICATION forming 3m of Letters PatehtNo. 6\5,021,'"dated May31, 1898.

.pplicetioniild June 1. 1397. Serial a.

To alflwjhom it. may concern: I

Be itknown thatl, FREDERICK RICHARD SIMMS, a. subject of the Queen ofGreat Britain, residing at London, Jilngland, have invented new anduseful Improvements 1n Pneumatic Tires, (for part of which I haveobtained a patent in Great Britain, No; 16,261, dated July 22, ,1896,and in France, No. 262,573, dated Deeember26, 1896,).of which thefollowing is a specification.

.This' invention relates to'improvements in the construction" ofpneumatic tires for the wheels of-cycles, motor-cars, or othervehicles;- and has for its object to provide a pneumatic tire which isless liable to puncture and which can supportg'reater pressure than suchtires as heretofore generally made.

' According to my invention I' form the tire of two rings ofindia-rubber, canvas, or any other Suitable flexible material molded toa semicircular shape in crosfs-sectionand-havre a fl on their inner andouter edges,-

"or I may-form the said tire or air-cushion of a ring of'similarmaterial molded to a horseshoe shape in cross-section and having lateralflanges. The inner flanges of the indiaeted orbolted orotherwise securedto a circular casing of metal or other suitable material and adaptedtoreeeive the ends of the spokes or arms of the wheel or to be securedto the wheel, while the outer flanges'of the india-r'ubber rings aresiinilarly secured in an outer casing or rings of. metal or othersuitable material which forms or form the tread or to whieh'the treadofi'solid rubber or other suitable material is also secured. The

aircushion may or may not be provided a separate-inner or air tuber.

with

In the accompanying drawings, Figure 1 is a sectionthrough the rim ofavehicle-wheelv made according to inyinvention. Fig; 2 is anelevation-of a portion of the same. Figs. 3, 4, 5., and 6 are sectionssimilar to Fig. 1 through the rims of modified forms of wheels Fig. 7 isa section,drawn to a largerscale,of a tire similar to that shown'in Fig.4. Figs. 8, Q, 10, 11, and 12 are views of details. Fig. 13 Iis asection,drawn to a larger scale, of a modified construction of tire.

.wheel', and e is :d outer flanges c c of the rings 639,021. (No model.)Patentedin Engla 1d July 22,1896,1{0-16361.andinl'ranoe December 26,1896, No. 262,573, 7 I

Referring to Figs. 1, 2, 3, 4, 5, 6, and 7, a a'are the rings, ofindia-rubber, canvas, or

other suitable flexible material, which form the air-cushions, and b b cc are the inner and outer flanges, respectively, provided. on the saidrings a a. d is the inner casing, to which the rings a dare secured andwhich in the case of the vehicle-wheels forms the rim of the the outercasing-to which the a a and the tread, in caseswliere a separate treadis elnployed, are secured. I In the wheel tire and rim shown in Figs..'1and 2 the india-rubber or other rings a a are secured by their flangesbl) to the inner metal .easingd, which is provided with a deep eentralgroove f'to receive them and forms the rim of the wheel, and by theirouter flanges c c to the outer metal casing e, which isalso providedwith a deep central groove 'gto receive them and forms the tread of thewheel, the flanges in both cases being shown secured to the casings bylacing,

telling devices can be equally Well employed.

In the arrangement shown in Fig. 3 the inner flanges Z) Z) are arrangedl a erally, sothat the metal rim or inner easing (Z is formed with twolateral grooves f f instead of the one central groove, struction. Theringsa yond the lateral flanges Fl and overlapat theirinnerends. Theouter casing, instead of being made of a single grooved ring, formedoftwo ringse e, of metal or other suitable material, between which theouter flanges 0 care secured, and the lower or outer ends 6 e of whichare bent back to form. a support for a separate flat tread h, fixed toit by any suitable means. This tire is shown p1 ovided witha separateinner or air tube Fig. 4 illustrates the application of the tire to 'a'wheel having an ordinary wood .-n rim j. In this case the constructionis very similar are continued beto that just described; but the innercasing (l ismade in two parts, which are inwardly, so as to be firmlysecured j, and the separate tread h is not extended secured to a metalsupport, but. is gripped between the outer flanges c c by the two rings3 e, forming the outer casing.

although it will be obvious that screws, bolts, rivets, or other fasasinethe above-described con--v to the rim In the arrangement shown inFig. 5, the construction oi which is very similar to that shown in Fig.25, with the exception that no inner or air tube 1' is employed, thespokes 1';

of the whet-i extend through the rim 1! into the tire and enter holes Iin bails oi, supported in recesses or cups in the upper end of thecentral rib it oi the tread it, which is gripped between the outer ringsI as in the previous case, piay being allowed the spokes /r in the saidholes I, as learly shown. This construction is designed for wheels ofheavy vehicles and is employed to give lateral strength to the tire. itwill be seen that the ends of the spokes form projections whichenter-guidingreccsscs in the tread, thereby preventing the tread and rimfrom moving laterally with respect to each other.

In the modification illustrated in Fig. 6, which shows a wheel designedto run on rails, (projections in this instance,) rods L are secured tothe rim (.1 and extend down through the tire into guiding recesses orholes i in the central rib 71/ ot' the tread 71 of the wheel, so as togive lateral strength, as in the previous modiiication. In this casetwoinner or air chambers i. i are employed for inflating the tire, whichchambers may or may not be connected. The two rings o a, forming theouter cover, are provided, in addition to the lateral flanges 71 b abovedescribed, with lateral flanges i b, entering corresponding grooves orreccsscs in the two rings 0 e, which form the outer casing and by meansof which the s:.id outer covering is secured to the tread 71..

Instead of holes I in the central rib Ii of the tread h I may form thesaid rib IL with a groove, into which the spokes or rods In extend.

Fig. 7 shows to a larger scale a tire somewhat similar to that shown inFig. i and illustrates the means which I advantageousiy'cmploy forsecuring the tire in the rim. In the said iigurepinso'o' aresliownpassed through holes in the lateral grooves or recesses ff ot' the rim oand through the tianges {I (1 of the outer cm eringot' the tire, thesaid pins bcint, all held in position in the holes by means of a wire twhich passes through holes in the ends of the pins \Vill 'i projectthrough the under s it: of the iatr-rai grooves or rc cs. :s I' oi' therim, l't'il it pin y a separate split pin or by any other suitablemeans.

Figs. 8, ti, and i show to a larger scale three ditt'crenti'ormsoi' pinswhich can be em ploycd for securing the tire to the rim of the wheel, asabove described, though I do not limit myself to the use oi thesel'orms. 'ihc pins shown in i igs. 1 and to do not re uire a wire to bethreaded through them to h ld them in position.

For securing the tread to the tire the illtilliS which i:i-i\antagt-ousiy employ arc shown in i-'|gs. I i and i' 'thal is tdsat,the two rrng'sr I, iorming' the outer casing: J'it|) the said treadbt-thv n the outer ilaug s '1 ol the rubber rip as 1/ o and are he d tghtiv in position by bolts 11 winch are pivoted to one ot' the rings cand extend through the tread, so that their projecting ends, which areslottml, can be passed over the opposite ring 1:. The washer r is theninserted in. the slot, and a screw s is inserted and kept in position bya cap I, screwed upon the end of the belt (1. These rings may, however,be fixed in position by any other known means.

Fig. .3 illustrates to a larger scale a tire wherein the outer coveringa is made somewhat horseshoeshaped in cross-section. The cover a is inthis case shown composed of al- ..ternate layers of. rubberrt and ofcanvas and rubber o and is secured to the rim (1 by split; pins (4'0,,passing through thcirlateral flanges b I). The tire is provided withan inner tube 1', and the two flanges I] b are connected by a strip ofcanvas 1!, which when the tire is inflated lies against the rim (1 andserves to protect the inner tube i.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, tdeclare thatwhat I claim is- I. Ina vehicle-wheel, the combination with the rim, ofa pneumatic cushion surrounding the same, secured to said rim and havingsop aratc flanges or edges along its periphery, a tread portionsurrounding said cushion, and fastening devices separate from the treadand cushion for positively securing the said tread portion to said edgesor flanges, substantially as described.

' 2. Ina vehicle-wheel, the combination with the rim,of a pneumaticcushion surrounding the same, secured to said rim and having separateflanges or edges along its periphery, a tread portion surrounding saidcushion, and fastening devices extending transversely through saidflanges and a portion of said tread, substantially as described.

3. Ina vehicle-wheel, the combination with the rim, of a pneumaticcushion secured to and surrounding the rim, and a tread portionsurrounding and secured to said cushion, said rim and tread having, theone, guiding dcvices, adapted to engage the other to prevent lateralplay oi the trcadaud rim with respect to each other, substantially asdescribed.

i. In a vehicle-wheel, thccombinatioh with the rim, of a. pn'ennmticcushion secured to and surrounding the rim, and a tread secured to andsurrounding said cushionpsaid rim and tread having the one, projections,engaging recesses in the other, for preventing the lateral movemcntoisaid rim and tread with respcctto each other, substantially asdescribed.

In a wheel the combination of a rim having lateral grooves or recesses,of a pair of india-rubber or other rings having outer peripheral iiangcsand lateral flanges to enter the said grooves or recesses, of a pair ofmetal rings forming an outer casing and of a tread ha\ .h a central rib,which passes up between oh-r peripheral flanges and is provided ends ofthe spokes some! k 1 e mm which enter the e wheel which project fromtherim, substantially asidesc'ribed."

6. In, a vehicle-wheel, the combination with the-rim, of apneumaticcushion secured to and surrounding the rim, said cushion beingopen along its periphery forming peripheral flanges or edges, a treadsurrounding said cushion and having a portion-adapted to en-- terbetween said edges or flangeasaid rim and the inwardly-extending portionof said tread being provided the one,-with projections', and the otherwith guiding-recesses to receive said projections, to prevent the lateral movement of said rim and tread with a respect to each 'other,substantially as described. I r I 7.- In a vehicle-wheel the combinationwith the rim, of a pneumatic cushion secured to and surroundingsaid'rirn, said cushion being open at its periphery forming peripheralflanges or edges, a. tread surrounding said' cushion and provided withportions adapted to enter between the edges of said cushion orwithisockets to re and retaining devices passing transversely throughsaid edges of the cushion and the inwardly-eirtending portion of thetread, substantially as described.

- 8. In a vehicle-Wheel, the combination with the rim havingadeepcentral groove and having its edges provided with lateralannuiargrooves, .of a pneumatic cushion engaging said central groove andprovided on each side with-an annular rib-to engage one of said lateralgrooves in said rim, said cushion being I open along its periphery andforming peripheral edges, a tread surrounding said cushion and engagingsaid peripheral edges, fastening devices extending transversely throughsaid'edges of the cushion and through said tread, and fastening devicesextending transversely through the lateral grooved portions of said rimand through thdlateral ribs of the cushion, substantially as described.

FREDERICK RICHARD SlD'liR.

Witnesses:

G. F. REDFERN, JOHN E. Bousrmnn.

